On the origins of apparent fragile-to-strong transition of protein hydration waters

Details On the origins of apparent fragile-to-strong transition of protein hydration waters On the origins of apparent fragile-to-strong transition of protein hydration waters

2008-06-10

arxiv.org/abs/0806.1719v2

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.101.225701

2H NMR is used to study the mechanisms for the reorientation of protein hydration water. In the past, crossovers in temperature-dependent correlation times were reported at T_x1=225K (X1) and T_x2=200K (X2). We show that neither X1 nor X2 are related to a fragile-to-strong transition. Our results rule out an existence of X1. Also, they indicate that water performs thermally activated and distorted tetrahedral jumps at T

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